International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 129 - Number 11 |
Year of Publication: 2015 |
Authors: Pallavi Agrawal, Madhu Shandilya |
10.5120/ijca2015907013 |
Pallavi Agrawal, Madhu Shandilya . Dual Microphone Beamforming Algorithm for Acoustic Signals. International Journal of Computer Applications. 129, 11 ( November 2015), 33-37. DOI=10.5120/ijca2015907013
This paper covers delay-and-sum beamformer and Filter and sum beamformer - Minimum Variance Distortion-less Response (MVDR) beamformer. Both the beamformers were simulated and tested in terms of noise source separation at various frequencies and computational complexity using MATLAB. Even though Generalized Side-Lobe Cancellers (GSC), Superdirectivity and Post-Filtering are also available. It actually covers two-sensor array beamforming which can be extended to multisensory array. MVDR beamformer gave better results as compared to delay-and-sum beamformer, as it adopts to noise condition and also improves the beamformer output, but has a higher computational complexity. Seeing the simulation results, MVDR proves to be a better option for implementing on smart phone applications.